diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2014 Paweł Nowak
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/Main.hs b/Main.hs
new file mode 100644
--- /dev/null
+++ b/Main.hs
@@ -0,0 +1,67 @@
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+import           Control.Applicative
+import           Control.Lens.TH
+import qualified Data.Attoparsec.Text as AP
+import           Data.Char
+import           Data.SemiIsoFunctor
+import           Data.Syntax (Syntax)
+import qualified Data.Syntax as S
+import qualified Data.Syntax.Attoparsec.Text as S
+import qualified Data.Syntax.Char as S
+import qualified Data.Syntax.Pretty as S
+import           Data.Text (Text)
+import qualified Data.Text.IO as T
+import qualified Text.PrettyPrint as P
+
+-- | A simple untyped lambda calculus.
+data AST = Var Text
+         | App AST AST
+         | Abs Text AST
+    deriving (Show)
+
+$(makePrisms ''AST)
+
+-- | A variable name.
+name :: Syntax syn Text => syn Text
+name = S.takeWhile1 isAlphaNum
+
+-- | Encloses a symbol in parentheses.
+parens :: Syntax syn Text => syn a -> syn a
+parens m = S.char '(' */ S.spaces_ */ m /* S.spaces_ /* S.char ')'
+
+-- | An atom is a variable or an expression in parentheses.
+atom :: Syntax syn Text => syn AST
+atom =  _Var /$/ name
+    /|/ parens expr
+
+-- | An expression of our lambda calculus.
+expr :: Syntax syn Text => syn AST
+expr =  _App /$/ atom /* S.spaces1 /*/ atom
+    /|/ _Abs /$/ S.char '\\'   /* S.spaces_
+              */ name          /* S.spaces
+             /*  S.string "->" /* S.spaces
+             /*/ expr 
+    /|/ atom
+
+main :: IO ()
+main = do
+    -- Load the standard input.
+    t <- T.getContents
+
+    -- Try to parse it.
+    case AP.parseOnly (S.getParser expr <* AP.skipSpace <* AP.endOfInput) t of
+      Left err -> putStrLn err
+      Right ast -> do
+        -- If parsing succeeded print the AST.
+        print ast
+        
+        -- Try to pretty print it.
+        -- (Printing cannot really fail in this example)
+        case S.runPrinter expr ast of
+          Left err -> putStrLn err
+          Right doc -> putStrLn (P.render doc)
+
+    return ()
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/syntax-example.cabal b/syntax-example.cabal
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--- /dev/null
+++ b/syntax-example.cabal
@@ -0,0 +1,22 @@
+name:                syntax-example
+version:             0.1.0.0
+synopsis:            Example application using syntax, a library for abstract syntax descriptions.
+license:             MIT
+license-file:        LICENSE
+author:              Paweł Nowak
+maintainer:          Paweł Nowak <pawel834@gmail.com>
+copyright:           Paweł Nowak 2014
+category:            Data
+build-type:          Simple
+cabal-version:       >=1.10
+
+source-repository head
+  type:     git
+  location: git@github.com:Pawel834/syntax-example.git
+
+executable syntax-example
+  main-is:             Main.hs
+  build-depends:       base >= 4 && < 5, lens, semi-iso,
+                       syntax, syntax-attoparsec, syntax-pretty,
+                       attoparsec, pretty, text
+  default-language:    Haskell2010